123111213202 has 16 divisors (see below), whose sum is σ = 186432477120. Its totient is φ = 60967300048.

The previous prime is 123111213193. The next prime is 123111213227. The reversal of 123111213202 is 202312111321.

123111213202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 123111213202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984699 + ... + 1102657.

It is an arithmetic number, because the mean of its divisors is an integer number (11652029820).

Almost surely, 2^123111213202 is an apocalyptic number.

123111213202 is a deficient number, since it is larger than the sum of its proper divisors (63321263918).

123111213202 is a wasteful number, since it uses less digits than its factorization.

123111213202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122945.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123111213202 its reverse (202312111321), we get a palindrome (325423324523).

The spelling of 123111213202 in words is "one hundred twenty-three billion, one hundred eleven million, two hundred thirteen thousand, two hundred two".